Middle School Physical Science Flashcards: Atoms Rearranged In Reactions

Study Atoms Rearranged In Reactions in Middle School Physical Science with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

Identify whether the equation $2H_2 + O_2 \rightarrow 2H_2O$ is balanced.

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ANSWER

Balanced. 4 H atoms and 2 O atoms on each side confirms balance.

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All flashcards

191 cards

What this deck covers

This deck focuses on Atoms Rearranged In Reactions, giving you a quick way to review the definitions, rules, and examples that matter most for Middle School Physical Science.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Practice questions

1 of 44Practice questions for this set

A particle model shows ammonia forming:

\text{N}_2 + 3\text{H}_2 \rightarrow 2\text{NH}_3

. Before: one N≡N molecule and three H–H molecules. After: two molecules where each N is bonded to three H atoms. How many hydrogen atoms are present before the reaction, and how many are present after the reaction?

Choose an answer

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